Up to now，ten Urban Dense Regions have basically taken shape，among which Changjiang Delta Urban Dense Region，Zhujiang Delta Urban Dense Region and the Beijing-Tianjin Urban Dense Region are more advanced than others. One side，the objective laws of the socioeconomic development foster Urban Dense Regions. On the other side，the development of Urban Dense Regions is restricted by socioeconomic conditions and policies. In the forward position of opening to the outside world and as the engine of China’s development，Urban Dense Regions play a main part in international competitions. Further more，Urban Dense Regions will set an example for other regions in practising the scientific concept of development，and will be the backbone of“expanding domestic demand，ensuring the growth of economy”.